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See detailPeer interactions in the primary classroom
Meyer, Anne UL

Doctoral thesis (2010)

The present research focuses on peer interactions engaged with the accomplishment of learning activities in the primary classroom. It is driven by the interest and need to understand learning and social ... [more ▼]

The present research focuses on peer interactions engaged with the accomplishment of learning activities in the primary classroom. It is driven by the interest and need to understand learning and social interaction taking place in peer group-s, and how the participants orient to the sequential organization of social interaction. The research draws on audio and video data stemming from the primary classroom in Luxembourg, and aims at 1) describing and analyzing the interactional organization of learning activities, 2) describing and analyzing the resources and methods, i.e. expert-novice-practices mobilized by young learners when orienting to the accomplishment of a learning activity, and 3) describing the opportunities for participation and for learning that may take place when learners orient to the accomplishment of a learning activity in peer interaction. Peer interaction is depicted as one form of a community of practice within which learning is situated and observable as learners in and through the deployment of expert-novice-practices orient to, and adapt to micro-shifts in the participation framework when accomplishing a learning activity. Results point to the fact that not only are expert-novice-practices deployed when young learners work in interaction, but these practices are also found to be inextricably linked to the constitution of expert-novice identities - this again has implications for how the learners orient to the accomplishment of a learning activity. [less ▲]

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See detailInternationale Wohnmobilität im ländlichen Saarland
Frys, Wioletta; Nienaber, Birte UL

Scientific Conference (2010, October 14)

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See detailLocal Languaging: Literacy Products and Practices in Gambian Society
Juffermans, Kasper UL

Doctoral thesis (2010)

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See detailCollaborative Nonlinear Model-Predictive Motion Planning and Control of Mobile Transport Robots for a Highly Flexible Production System
Wangmanaopituk, Suparchoek; Voos, Holger UL; Kongprawechnon, Waree

in ScienceAsia (2010), 36(4), 333-341

This study is based on a new approach for an advanced microproduction system or highly flexible production systems where all necessary production and assembly processes are connected in a very flexible ... [more ▼]

This study is based on a new approach for an advanced microproduction system or highly flexible production systems where all necessary production and assembly processes are connected in a very flexible way using autonomous mobile transport and handling robots. Each robot has to follow its planned paths while avoiding collisions with other robots. In addition, problem-specific constraints for a defined microproduction system, such as limitations of the velocity and accelerations of the robots, have to be fulfilled. This paper focuses on a two-level model predictive optimizing approach. On a global long-term level, simple dynamic models of the robots are used to compute optimal paths under differential constraints where a safety distance between all robots is achieved. Since many uncertainties and unforeseen events could occur, all robots also use a nonlinear model predictive control approach on a local real-time level. This control approach solves the path following and the collision avoidance problems in parallel, while also taking into account differential constraints of the single robots. [less ▲]

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See detailEvaluation of GNSS as a Tool for Monitoring Tropospheric Water Vapour
Ahmed, Furqan UL

Bachelor/master dissertation (2010)

Global Navigation Satellite Systems have the potential to become a significant tool in climate research ... [more ▼]

Global Navigation Satellite Systems have the potential to become a significant tool in climate research due to the fact that GNSS data can be processed in order to estimate the propagation delay experienced by the signal in atmosphere. If the ground pressure and temperature is known, the signal propagation path delay can be related to the amount of water vapour in the atmosphere. This thesis project focuses on the evaluation of GNSS as a tool for atmospheric water vapour estimation. In the first part of the project, various GNSS data processing software packages were compared by processing the same set of data and performing a statistical comparison of the estimates of zenith total delay obtained by each package. The software packages compared are GIPSY‐OASIS, Bernese GNSS Processing Software, GAMIT and magicGNSS. Also different strategies and methods, such as double‐differencing and precise point positioning,  are  investigated.  The  output from the  packages  is  validated  using  delay measurements obtained from ECMWF and RCA numerical models. It was observed that the output from climate models agrees with that from the software packages and the output from various software packages have a similarity between each other within 3 millimeters. In the second part of the project, simulations of new GNSS are carried out using in‐house software developed at Chalmers and SP Technical Research Institute of Sweden in order to investigate new methods and possible future improvements. The effect of local errors on atmospheric delay estimates from GPS, GLONASS and Galileo was studied through simulations. A hypothetical system formed by combination of the constellations of GPS, GLONASS and Galileo was also simulated and it was found to be least susceptible to local errors. Simulations were performed by varying some Keplerian orbital elements for Galileo system and it was observed that an orbit inclination between 60 degree and 65 degree would have been optimum for Galileo system. [less ▲]

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See detailPain modulation induced by Heterotopic Noxious Counter-Stimulation (HNCS) : psychophysiological assessment of adequate stimulation paradigms and sex-related effects
Streff, Anouk UL

Doctoral thesis (2010)

This work comprises three studies whose main concern was to find a valid tonic pain model able to trigger a genuine diffuse noxious pain inhibition. All studies were performed in healthy, drug-free ... [more ▼]

This work comprises three studies whose main concern was to find a valid tonic pain model able to trigger a genuine diffuse noxious pain inhibition. All studies were performed in healthy, drug-free volunteers and whereas the first two are validation studies, the third is an application study of the previous two. The aim of the first study was to characterize the cold pressor (CPT) and hot water immersion test (HIT) from a physiological and a psychophysical point of view. A second issue was to clarify the origin of potential autonomic responses during both tests; are they related to baroreflex activity or rather a consequence of the pain experience per se? The study was performed in 30 volunteers aged 19-57 (median 24) years, and consisted of a single session including one CPT (4 ± 0.2°C) and one HIT (47 ± 0.5°C) with a cut-off-point of 5 minutes. Participants were randomly assigned to sequence order (the sequence of both trials was alternated) and groups were paralleled with respect to gender. Cardiovascular, respiratory and electrodermal activities as well as subjective pain intensity were continuously monitored. Pain detection and tolerance thresholds as well as pain unpleasantness and nervous tension were assessed additionally. Both tests were found to be comparable with respect to intensity of subjective pain and time course, but a significantly higher blood pressure increase during CPT could be observed, compared to the HIT. In conclusion, the HIT appears to be less confounded with baroreflex activity and hence seems to be a more adequate tonic pain model. The second study tested the internal validity of inter-digital web pinching (IWP) with regard to its potential as DNIC-trigger. 24 gender-matched participants, aged 21-54 (median 25) years, volunteered for the controlled study. The protocol included the assessment of thermal and mechanical perceptual wind-up (WU) before and after a HIT (47.5 °C) or an IWP (15 N) of 2 minutes duration each. WU pain was induced by 10 repetitive (1 Hz) contact heat (max. 49°C; 5 5 mm thermode) or 10 ballistic impact stimuli (0.5 g at 9m/s) on the phalanges of the non-dominant hand. Cardiovascular and corrugator muscle activity as well as pain experience were permanently monitored. Both heterotopic noxious counter-stimulation (HNCS) types produced a similar pain experience, but a more pronounced cardiovascular activity was observed for the HIT. Painful water immersion is though accompanied by a stronger baroreceptor activity. WU pain was significantly reduced for both pain modalities, although the inhibition was somewhat stronger for the HIT than the IWP. The IWP, being practically uncontaminated by baroreflex sensitivity (BRS), proved its validity as DNIC-trigger. The third study investigated temporal characteristics of electrically elicited pain and nocifensive RIII-reflex activity in a gender-balanced sample of 28 volunteers aged 21-38 (median 27) years, using IWP as HNCS, a tonic pain model previously validated to be BRS-unrelated. Sex-related differences in the post HNCS time courses of pain perception were identified with women demonstrating a more rapid return to baseline compared to men. Interestingly, an opposite pattern was observed regarding nociceptive reflex activity with a steeper return rate of electromyographic responses in males, whereas those of women remained attenuated over the entire observation period. These findings may reflect a stronger defensive response to pain in women. [less ▲]

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See detailState Aid, Subsidy and Tax Incentives under EU and WTO Law
Micheau, Claire UL

Doctoral thesis (2010)

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See detailItinéraires luxembourgeois et européens.Evolutions et souvenirs: 1945-1985
Werner, Pierre; Danescu, Elena UL; Danescu, Elena UL

Book published by GNOSIS - 3th edition. Fully revised and corrected edition (2010)

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See detail'A New Medea' in late medieval French narratives
Leglu, Catherine UL

in Simon, Anne; Bartel, Heike (Eds.) Unbinding Medea : Interdisciplinary approaches to a classical myth from Antiquity to the 21st century (2010)

Within a themed volume dedicated to the reception and adaptation of the story of Medea in many media and genres, this chapter presents texts and images of the 15th century that point to a tendency to ... [more ▼]

Within a themed volume dedicated to the reception and adaptation of the story of Medea in many media and genres, this chapter presents texts and images of the 15th century that point to a tendency to interpret Medea as a tragic heroine rather than a monstrous mother. [less ▲]

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See detailDas ‚Erlernen’ von globaler Weinkultur anhand regionalen Weinen. Normen und Aneignungen einer sensorischen Expertise
Reckinger, Rachel UL

Scientific Conference (2010, October)

Das aktuelle Spannungsfeld der Globalisierung des Essens- und Getränkeangebot sowie des gleichzeitigen Bedeutungsgewinns von regionalen (Nischen-)Produkten erscheint besonders deutlich am Beispiel vom ... [more ▼]

Das aktuelle Spannungsfeld der Globalisierung des Essens- und Getränkeangebot sowie des gleichzeitigen Bedeutungsgewinns von regionalen (Nischen-)Produkten erscheint besonders deutlich am Beispiel vom Wein. Einerseits lässt sich, auf der Seite der Produktion, eine Standardisierung der Herstellungsweisen und eine Konzentration der Besitzverhältnisse, insbesondere in den ‚neuen’ Weinländern – aber gleichzeitig, wenngleich in andersartiger Form, in den ‚alten’ Weinländern – ausmachen. Parallel dazu werden ‚Terroir’-orientierte Weinproduzenten als Hüter von valorisiertem, vermeintlich tradiertem Wissen und als Boten einer letztlich geografisch determinierten Geschmackspalette konstruiert. Andererseits ist, auf der Seite des Konsums, seit den 1980er Jahren eine ständig steigende Tendenz zur Ästhetisierung vom Weingenuss zu verzeichnen, der durch das degustative, mitunter mikro-parzellarische, Weinwissen von einem (publizistischen) Expertentum rationalisiert wird. So erleben alltagsweltliche Weintrinker/-innen diese Tätigkeit als einen Bereich, der, um in seinen Potenzialitäten ausgeschöpft werden zu können, nur mittels Wissens zugänglich sei. Dementsprechend steigt die Anzahl an Personen, die an Weinverkostungskursen ‚für Anfänger/-innen’ teilnehmen. Die drei Kurse in Luxemburg, die durch teilnehmende Beobachtung und mittels Experten/-innengesprächen mit den Kursleitern/-innen und Tiefeninterviews mit Teilnehmenden analysiert wurden (Reckinger 2008), zeichnen sich durch jeweils unterschiedliche – jedoch engagierte – Positionierungen in Bezug auf globalisierte und regionale Produkttypen aus. Dabei erscheinen Transnationalität, Regionalisierung und Einzigartigkeit (der Winzer/-innen sowie der geografischen Gegebenheiten) als performative Werte, die jedoch ausschliesslich durch ,autonomes’ sensorisches Wahrnehmen und Einordnen zu erschliessen seien, d.h. durch Subjektivität und Kontingenz. Dieses normative Angebot wird von den Kursteilnehmenden ambivalent rezipiert, je nachdem wie selbstzentriert, soziabilitätszentriert oder objektzentriert sie motiviert sind. Letzteres wird von den Kursleitern/-innen als Faktor zur Evaluierung von Qualität(en) hervorgehoben – seien sie standardisiert, pluralisiert oder hybridisiert. Demgegenüber bleibt das alltagsweltliche polysensorische Erleben einer alternativen Normativität von Identifikationspotential verhaftet. [less ▲]

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See detailEco-systems biology: a new frontier in microbiology
Wilmes, Paul UL

Scientific Conference (2010, October)

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See detailThe ever incomplete single market: differentiation and the evolving frontier of integration
Howarth, David UL; Sadeh, Tal

in Journal of European Public Policy (2010), 17(7), 922-935

Progress in market integration over the past two decades has come at the expense of growing flexibility in the laws that govern the singlemarket (SM) as well as the way that these laws are implemented ... [more ▼]

Progress in market integration over the past two decades has come at the expense of growing flexibility in the laws that govern the singlemarket (SM) as well as the way that these laws are implemented. This differentiated integration comes in four forms: soft; informal; multi-speed; and opt-out differentiation. We examine how the completion of the SM has been held back in the varied implementation of EU competition policy and variation in national corporate law, energy markets, services and taxation. These sectors and issue areas form the frontier in which the main political struggles over the future shape of the SM take place, and in which differentiation is most clearly manifested. The SM notion supposedly entails a concrete set of substantive policy commitments that form the basis of the ‘ever closer union’. However, increasing differentiation undermines the identification of the EU’s core constitutional commitments. [less ▲]

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See detailZusammenhänge zwischen der subjektiven zirkadianen Phasenlage und psychischen Variablen.
Specht, M.; Kemper, Christoph UL; Bongard, S. et al

Poster (2010, October)

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See detailPlace and summation coding for canonical and non-canonical finger numeral representations
Di Luca, Samuel UL; Lefèvre, Nathalie; Pesenti, Mauro

in Cognition (2010), 117(1), 95-100

Fingers can be used to express numerical magnitudes, and cultural habits about the fixed order in which fingers are raised determine which configurations become canonical and which non-canonical. Although ... [more ▼]

Fingers can be used to express numerical magnitudes, and cultural habits about the fixed order in which fingers are raised determine which configurations become canonical and which non-canonical. Although both types of configuration carry magnitude information, it has been shown that the canonical ones are recognized faster and directly linked to number semantics. Here we tested whether this difference is a consequence of differences in the qualitative way of processing the two types of configurations. When participants named Arabic digits (Experiment 1) or verbal numerals (Experiment 2) primed by canonical and non-canonical finger configurations, qualitatively different priming patterns were observed for the two types of configurations. Canonical configurations activated a place coding representation, with priming spreading to close smaller and larger magnitudes as a function of the prime-target distance. Conversely, non-canonical configurations activated a summation coding representation priming smaller and equal magnitudes independently of the prime-target distance, and larger targets depending on this distance. [less ▲]

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See detailConjecture S-adique
Leroy, Julien UL

Presentation (2010, October)

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